| [X] | QUARTERLY      REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF      1934 |
|-----|---------------------------------------------------------------------------------------------------|

| [  ] | TRANSITION      REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF      1934 |
|----------------|----------------------------------------------------------------------------------------------------|

| Man-AHL      Diversified I L.P.                        |
|--------------------------------------------------------|
| (Exact      name of registrant as specified incharter) |

| Delaware                                                            |   | 06-1496634                             |
|---------------------------------------------------------------------|--------|----------------------------------------|
| (State      or other jurisdiction of incorporation or organization) |   | (IRS      Employer Identification No.) |

| c/o      Man Investments (USA) Corp.123      North Wacker Drive28th      FloorChicago,      Illinois |   | 60606           |
|------------------------------------------------------------------------------------------------------|--------|-----------------|
| (Address      of principal executive offices)                                                        |   | (Zip      Code) |
|                                                                                                 |   |            |
| (312)      881-6800(Registrant’s      telephone number, including area code)                   |   |            |

| Large      Accelerated Filer [  ]     | Accelerated      Filer   [  ]  |
|-------------------------------------------------|---------------------------------------------------------|
|                                            |                                                    |
| Non-Accelerated      Filer   [X] | Smaller      reportingcompany  [  ] |

----

| (a)   | At      March 31, 2008 (unaudited) and December 31,2007 |
|-----------------|---------------------------------------------------------|

| (b)   | For      the three months ended March 31, 2008 and 2007  (unaudited) |
|-----------------|----------------------------------------------------------------------|

----

| MAN-AHL      DIVERSIFIED I L.P.                                                                      |   |                           |       |   |              |   |
|------------------------------------------------------------------------------------------------------|--------|--------------------------------|------------|--------|-------------------|--------|
| (A      Delaware Limited Partnership)                                                                |   |                           |       |   |              |   |
|                                                                                                 |   |                           |       |   |              |   |
| STATEMENTS      OF FINANCIAL CONDITION                                                               |
|                                                                                                 |   |                           |       |   |              |   |
|                                                                                                 |   | March      31, 2008(unaudited) |       |   | December 31, 2007 |   |
| ASSETS                                                                                               |   |                           |       |   |              |   |
|                                                                                                 |   |                           |       |   |              |   |
| CASH                                                                                                 |   | $                              | 8,956,771  |   |              | $      | 4,225,671 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| INVESTMENT      IN MAN-AHL DIVERSIFIED                                                               |   |                           |       |   |              |   |   |   |
|   TRADING      COMPANY L.P.                                                                |   |                           | 89,360,949 |   |              |   | 59,555,095 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| DUE      FROM MAN-AHL DIVERSIFIED                                                                    |   |                           |       |   |              |   |   |   |
|   TRADING      COMPANY L.P.                                                                |   |                           | 1,106,009  |   |              |   | 889,224 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| OTHER      ASSETS                                                                                    |   |                           | 295        |   |              |   | 771 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| TOTAL                                                                                                |   | $                              | 99,424,024 |   |              | $      | 64,670,761 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| LIABILITIES      AND PARTNERS’ CAPITAL                                                         |   |                           |       |   |              |   |   |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| LIABILITIES:                                                                                         |   |                           |       |   |              |   |   |   |
|   Redemptions      payable                                                                 |   | $                              | 601,225    |   |              | $      | 605,316 |   |
|   Subscriptions      received in advance                                                   |   |                           | 8,956,771  |   |              |   | 4,225,671 |   |
|   Management      fees payable                                                             |   |                           | 225,734    |   |              |   | 150,779 |   |
|   Incentive      fees payable                                                              |   |                           | 105,231    |   |              |   | - |   |
|   Brokerage      commissions payable                                                       |   |                           | 127,557    |   |              |   | 67,505 |   |
|   Accrued      expenses                                                                    |   |                           | 46,262     |   |              |   | 66,100 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
|            Total      liabilities             |   |                           | 10,062,780 |   |              |   | 5,115,371 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| PARTNERS’      CAPITAL:                                                                        |   |                           |       |   |              |   |   |   |
|   General      Partner (186 unit equivalents outstanding                                   |   |                           |       |   |              |   |   |   |
|     at      March 31, 2008 and December 31, 2007, respectively)                  |   |                           | 611,568    |   |              |   | 539,353 |   |
|   Limited      Partners (27,047 and 20,393 units outstanding                               |   |                           |       |   |              |   |   |   |
|     at      March 31, 2008 and December 31, 2007, respectively)                  |   |                           | 88,749,676 |   |              |   | 59,016,037 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
|            Total      partners’ capital |   |                           | 89,361,244 |   |              |   | 59,555,390 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| TOTAL                                                                                                |   | $                              | 99,424,024 |   |              | $      | 64,670,761 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| NET      ASSET VALUE PER OUTSTANDING UNIT OF                                                         |   |                           |       |   |              |   |   |   |
|   PARTNERSHIP      INTEREST                                                                |   | $                              | 3,281.41   |   |              | $      | 2,893.93 |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
|                                                                                                 |   |                           |       |   |              |   |   |   |
| See      accompanying notes and attached financial statements                                        |   |                           |       |   |              |   |   |   |
| of      Man-AHL Diversified Trading Company L.P.                                                     |   |                           |       |   |              |   |   |   |

----

| MAN-AHL      DIVERSIFIED I L.P.                                                                                                |   |               |       |   |               |   |
|--------------------------------------------------------------------------------------------------------------------------------|--------|--------------------|------------|--------|--------------------|--------|
| (A      Delaware Limited Partnership)                                                                                          |   |               |       |   |               |   |
|                                                                                                                           |   |               |       |   |               |   |
| STATEMENTS      OF OPERATIONS (UNAUDITED)                                                                                      |
|                                                                                                                           |   |               |       |   |               |   |
|                                                                                                                           |   | For      the three |       |   | For      the three |   |
|                                                                                                                           |   | months      ended  |       |   | months      ended  |   |
|                                                                                                                           |   | March 31, 2008     |       |   | March 31, 2007     |   |
|                                                                                                                           |   |               |       |   |               |   |
| NET      INVESTMENT INCOME ALLOCATED FROM                                                                                      |   |               |       |   |               |   |
|   MAN-AHL      DIVERSIFIED TRADING COMPANY L.P. —                                                              |   |               |       |   |               |   |
|   Interest      income                                                                                               |   | $                  | 513,973    |   |               | $      | 339,664 |   |
|                                                                                                                           |   |               |       |   |               |   |   |   |
| PARTNERSHIP      EXPENSES:                                                                                                     |   |               |       |   |               |   |   |   |
|   Brokerage      commissions                                                                                         |   |               | 396,600    |   |               |   | 305,470 |   |
|   Management      fees                                                                                               |   |               | 596,113    |   |               |   | 254,760 |   |
|   Incentive      fees                                                                                                |   |               | 2,268,024  |   |               |   | 120,255 |   |
|   Other      expenses                                                                                                |   |               | 34,312     |   |               |   | 14,015 |   |
|                                                                                                                           |   |               |       |   |               |   |   |   |
|            Total      expenses                                          |   |               | 3,295,049  |   |               |   | 694,500 |   |
|                                                                                                                           |   |               |       |   |               |   |   |   |
|            Net      investment loss                                     |   |               | (2,781,076 | )      |               |   | (354,836 | ) |
|                                                                                                                           |   |               |       |   |               |   |   |   |
| REALIZED      AND UNREALIZED GAINS (LOSSES) ON                                                                                 |   |               |       |   |               |   |   |   |
|   TRADING      ACTIVITIES ALLOCATED FROM MAN-AHL                                                                     |   |               |       |   |               |   |   |   |
|   DIVERSIFIED      TRADING COMPANY L.P.:                                                                             |   |               |       |   |               |   |   |   |
|   Net      realized trading gains (losses) on closed contracts                                                       |   |               | 13,278,593 |   |               |   | (1,450,948 | ) |
|   Net      change in unrealized trading gains (losses) on open    contracts                                          |   |               | (1,399,924 | )      |               |   | (420,780 | ) |
|                                                                                                                           |   |               |       |   |               |   |   |   |
|            Net      gains (losses) on trading activities allocated from |   |               |       |   |               |   |   |   |
|              Man-AHL      Diversified Trading Company L.P.    |   |               | 11,878,669 |   |               |   | (1,871,728 | ) |
|                                                                                                                           |   |               |       |   |               |   |   |   |
| NET      INCOME (LOSS)                                                                                                         |   | $                  | 9,097,593  |   |               | $      | (2,226,564 | ) |
|                                                                                                                           |   |               |       |   |               |   |   |   |
|                                                                                                                           |   |               |       |   |               |   |   |   |
| NET      INCOME (LOSS) PER UNIT                                                                                                |   |               |       |   |               |   |   |   |
|   OF      PARTNERSHIP INTEREST                                                                                       |   | $                  | 387.48     |   |               | $      | (152.28 | ) |
|                                                                                                                           |   |               |       |   |               |   |   |   |
| See      accompanying notes and attached financial statements                                                                  |   |               |       |   |               |   |   |   |
| of      Man-AHL Diversified Trading Company L.P.                                                                               |   |               |       |   |               |   |   |   |

----

| MAN-AHL      DIVERSIFIED I L.P.                                          |   |     |       |   |    |   |    |   |   |
|--------------------------------------------------------------------------|--------|----------|------------|--------|---------|--------|---------|--------|--------|
| (A      Delaware Limited Partnership)                                    |   |     |       |   |    |   |    |   |   |
|                                                                     |   |     |       |   |    |   |    |   |   |
| STATEMENTS      OF CHANGES IN PARTNERS’ CAPITAL (UNAUDITED)        |   |     |       |   |    |   |    |   |   |
| FOR      THE THREE MONTHS ENDED MARCH 31, 2008 AND 2007                  |
|                                                                     |   |     |       |   |    |   |    |   |   |
|                                                                     |   |     |       |   |    |   |    |   |   |
|                                                                     |   | Limited  |       |   | General |   |    |   |   |
|                                                                     |   | Partners |       |   | Partner |   |    | Total  |   |
|                                                                     |   |     |       |   |    |   |    |   |   |
| PARTNERS’      CAPITAL — December 31, 2006                   |   | $        | 28,997,055 |   |    | $      | 476,310 |   |   | $ | 29,473,365 |   |
|                                                                     |   |     |       |   |    |   |    |   |   |   |   |   |
|   Issuance      of 3,181 units of limited partnership interest |   |     | 8,126,307  |   |    |   | -       |   |   |   | 8,126,307 |   |
|   Redemption      of 418 units of limited partnership interest |   |     | (1,015,635 | )      |    |   | -       |   |   |   | (1,015,635 | ) |
|   Net      loss                                                |   |     | (2,198,182 | )      |    |   | (28,381 | )      |   |   | (2,226,564 | ) |
|                                                                     |   |     |       |   |    |   |    |   |   |   |   |   |
| PARTNERS’      CAPITAL — March 31, 2007                      |   | $        | 33,909,545 |   |    | $      | 447,929 |   |   | $ | 34,357,473 |   |
|                                                                     |   |     |       |   |    |   |    |   |   |   |   |   |
| PARTNERS’      CAPITAL — December 31, 2007                   |   | $        | 59,016,037 |   |    | $      | 539,353 |   |   | $ | 59,555,390 |   |
|                                                                     |   |     |       |   |    |   |    |   |   |   |   |   |
|   Issuance      of 7,249 units of limited partnership interest |   |     | 22,556,902 |   |    |   | -       |   |   |   | 22,556,902 |   |
|   Redemption      of 595 units of limited partnership interest |   |     | (1,848,641 | )      |    |   | -       |   |   |   | (1,848,641 | ) |
|   Net      income                                              |   |     | 9,025,378  |   |    |   | 72,215  |   |   |   | 9,097,593 |   |
|                                                                     |   |     |       |   |    |   |    |   |   |   |   |   |
| PARTNERS’      CAPITAL — March 31, 2008                      |   | $        | 88,749,676 |   |    | $      | 611,568 |   |   | $ | 89,361,244 |   |
|                                                                     |   |     |       |   |    |   |    |   |   |   |   |   |
|                                                                     |   |     |       |   |    |   |    |   |   |   |   |   |
| See      accompanying notes and attached financial statements            |   |     |       |   |    |   |    |   |   |   |   |   |
| of      Man-AHL Diversified Trading Company L.P.                         |   |     |       |   |    |   |    |   |   |   |   |   |

----

| MAN-AHL      DIVERSIFIED I L.P.                                                                                  |   |               |        |   |               |   |
|------------------------------------------------------------------------------------------------------------------|--------|--------------------|-------------|--------|--------------------|--------|
| (A      Delaware Limited Partnership)                                                                            |   |               |        |   |               |   |
|                                                                                                             |   |               |        |   |               |   |
| STATEMENTS      OF CASH FLOWS (UNAUDITED)                                                                        |
|                                                                                                             |   |               |        |   |               |   |
|                                                                                                             |   | For      the three |        |   | For      the three |   |
|                                                                                                             |   | months      ended  |        |   | months      ended  |   |
|                                                                                                             |   | March 31, 2008     |        |   | March 31, 2007     |   |
|                                                                                                             |   |               |        |   |               |   |
| CASH      FLOWS FROM OPERATING ACTIVITIES:                                                                       |   |               |        |   |               |   |
|   Net      income (loss)                                                                               |   | $                  | 9,097,593   |   |               | $      | (2,226,564 | ) |
|   Adjustments      to reconcile net income (loss) to net                                               |   |               |        |   |               |   |   |   |
|     cash      used in operating activities:                                                  |   |               |        |   |               |   |   |   |
|       Purchases      of investment in Man-AHL Diversified                          |   |               |        |   |               |   |   |   |
|        Trading      Company L.P.                                              |   |               | (21,697,081 | )      |               |   | (8,126,307 | ) |
|       Sales      of investment in Man-AHL Diversified                              |   |               |        |   |               |   |   |   |
|        Trading      Company L.P.                                              |   |               | 4,283,869   |   |               |   | 1,710,135 |   |
|       Net      change in appreciation of investment in Man-AHL                     |   |               |        |   |               |   |   |   |
|         Diversified      Trading Company L.P.                            |   |               | (12,392,642 | )      |               |   | 1,532,064 |   |
|     Changes      in assets and liabilities:                                                  |   |               |        |   |               |   |   |   |
|       Due      from Man-AHL Diversified Trading Company L.P.                       |   |               | (216,785    | )      |               |   | (304,056 | ) |
|       Other      assets                                                            |   |               | 476         |   |               |   | - |   |
|       Management      fees payable                                                 |   |               | 74,955      |   |               |   | 12,939 |   |
|       Incentive      fees payable                                                  |   |               | 105,231     |   |               |   | - |   |
|       Brokerage      commissions payable                                           |   |               | 60,052      |   |               |   | 6,000 |   |
|       Accrued      expenses                                                        |   |               | (19,838     | )      |               |   | (4,083 | ) |
|                                                                                                             |   |               |        |   |               |   |   |   |
|            Net      cash used in operating activities     |   |               | (20,704,170 | )      |               |   | (7,399,872 | ) |
|                                                                                                             |   |               |        |   |               |   |   |   |
| CASH      FLOWS FROM FINANCING ACTIVITIES:                                                                       |   |               |        |   |               |   |   |   |
|   Proceeds      from subscriptions                                                                     |   |               | 26,428,181  |   |               |   | 8,998,134 |   |
|   Payments      on redemptions                                                                         |   |               | (992,911    | )      |               |   | (736,835 | ) |
|                                                                                                             |   |               |        |   |               |   |   |   |
|            Net      cash provided by financing activities |   |               | 25,435,270  |   |               |   | 8,261,299 |   |
|                                                                                                             |   |               |        |   |               |   |   |   |
| NET      INCREASE IN CASH                                                                                        |   |               | 4,731,100   |   |               |   | 861,427 |   |
|                                                                                                             |   |               |        |   |               |   |   |   |
| CASH      — Beginning of period                                                                            |   |               | 4,225,671   |   |               |   | 1,712,632 |   |
|                                                                                                             |   |               |        |   |               |   |   |   |
| CASH      — End of period                                                                                  |   | $                  | 8,956,771   |   |               | $      | 2,574,059 |   |
|                                                                                                             |   |               |        |   |               |   |   |   |
| SUPLEMENTAL      DISCLOSURE OF NON-CASH                                                                          |   |               |        |   |               |   |   |   |
|   TRANSACTIONS:                                                                                        |   |               |        |   |               |   |   |   |
|   Non-cash      contributions of partners' capital                                                     |   | $                  | 859,821     |   |               | $      | - |   |
|                                                                                                             |   |               |        |   |               |   |   |   |
|   Non-cash      redemptions of partners' capital                                                       |   | $                  | (859,821    | )      |               | $      | - |   |
|                                                                                                             |   |               |        |   |               |   |   |   |
|                                                                                                             |   |               |        |   |               |   |   |   |
| See      accompanying notes and attached financial statements                                                    |   |               |        |   |               |   |   |   |
| of      Man-AHL Diversified Trading Company L.P.                                                                 |   |               |        |   |               |   |   |   |

----

| 1.   | ORGANIZATION      OF THE PARTNERSHIP |
|----------------|--------------------------------------|

| 2.   | SIGNIFICANT      ACCOUNTING POLICIES |
|----------------|--------------------------------------|

----

| 3.   | LIMITED      PARTNERSHIP AGREEMENT |
|----------------|------------------------------------|

----

| 4.   | EXPENSES |
|----------------|----------|

| 5.   | DERIVATIVE      FINANCIAL INSTRUMENTS |
|----------------|---------------------------------------|

| 6.   | FINANCIAL      GUARANTEES |
|----------------|---------------------------|

| 7.   | RECENT      ACCOUNTING PRONOUNCEMENTS |
|----------------|---------------------------------------|

----

|                                                                                            |   |      |       |   |         |   |       |      |   |   |       |   |   | Net      Transfers In |       |   |    |   |
|-------------------------------------------------------------------------------------------------|--------|-----------|------------|--------|--------------|--------|------------|-----------|--------|--------|------------|--------|--------|-----------------------|------------|--------|---------|--------|
|                                                                                            |   | Beginning |       |   | Net          |   |       |      |   |   |       |   |   | and/or      Out of    |       |   | Ending  |   |
|                                                                                            |   | Balance   |       |   | Appreciation |   |       | Purchases |   |   | Sales      |   |   | Level 3               |       |   | Balance |   |
|                                                                                            |   |      |       |   |         |   |       |      |   |   |       |   |   |                  |       |   |    |   |
| Investment      in Man-AHL Diversified Trading Company      L.P.                                |   | $         | 59,555,095 |   |         | $      | 12,392,642 |      |   | $      | 21,697,081 |   |   | $                     | (4,283,869 | )      |    |   | - |   |   | $ | 89,360,949 |   |
|                                                                                            |   |      |       |   |         |   |       |      |   |   |       |   |   |                  |       |   |    |   |   |   |   |   |   |   |
| Valuation      of the above position is discussed in Note 2 of these financial      statements. |   |      |       |   |         |   |       |      |   |   |       |   |   |                  |       |   |    |   |   |   |   |

----

| (c)   | At      March 31, 2008 (unaudited) and December 31,2007 |
|-----------------|---------------------------------------------------------|

| (d)   | For      the three months ended March 31, 2008 and 2007  (unaudited) |
|-----------------|----------------------------------------------------------------------|

----

| MAN-AHL      DIVERSIFIED TRADING COMPANY L.P.                                                        |   |           |        |   |              |   |
|------------------------------------------------------------------------------------------------------|--------|----------------|-------------|--------|-------------------|--------|
| (A      Delaware Limited Partnership)                                                                |   |           |        |   |              |   |
|                                                                                                 |   |           |        |   |              |   |
| STATEMENTS      OF FINANCIAL CONDITION                                                               |
|                                                                                                 |   |           |        |   |              |   |
|                                                                                                 |   | March 31, 2008 |        |   |              |   |
|                                                                                                 |   | (unaudited)    |        |   | December 31, 2007 |   |
| ASSETS                                                                                               |   |           |        |   |              |   |
|                                                                                                 |   |           |        |   |              |   |
| Equity      in commodity futures and forwards                                                        |   |           |        |   |              |   |
|  trading      accounts:                                                                         |   |           |        |   |              |   |
|    Net      unrealized trading gains on open futures contracts                        |   | $              | 3,426,380   |   |              | $      | 5,247,868 |   |
|    Net      unrealized trading gains on open forward contracts                        |   |           | 1,075,353   |   |              |   | 2,411,929 |   |
|    Due      from broker                                                               |   |           | 23,953,931  |   |              |   | 96,297,513 |   |
|                                                                                                 |   |           | 28,455,664  |   |              |   | 103,957,310 |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
| Cash      and cash equivalents                                                                       |   |           | 308,821,869 |   |              |   | 158,733,582 |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
| Interest      receivable                                                                             |   |           | 146,901     |   |              |   | 148,527 |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
| TOTAL                                                                                                |   | $              | 337,424,434 |   |              | $      | 262,839,419 |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
| LIABILITIES      AND PARTNERS’ CAPITAL                                                         |   |           |        |   |              |   |   |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
| LIABILITIES      — Redemptions payable                                                         |   | $              | 7,076,068   |   |              | $      | 2,629,598 |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
| PARTNERS’      CAPITAL:                                                                        |   |           |        |   |              |   |   |   |
|   General      Partner                                                                     |   |           | -           |   |              |   | - |   |
|   Limited      Partners (37,748 and 35,195 units outstanding                               |   |           |        |   |              |   |   |   |
|     at      March 31, 2008 and December 31, 2007, respectively)                  |   |           | 330,348,366 |   |              |   | 260,209,821 |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
|            Total      partners’ capital |   |           | 330,348,366 |   |              |   | 260,209,821 |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
| TOTAL                                                                                                |   | $              | 337,424,434 |   |              | $      | 262,839,419 |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
| NET      ASSET VALUE PER OUTSTANDING UNIT OF                                                         |   |           |        |   |              |   |   |   |
|   PARTNERSHIP      INTEREST                                                                |   | $              | 8,751.35    |   |              | $      | 7,393.28 |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
|                                                                                                 |   |           |        |   |              |   |   |   |
| See      notes to financial statements.                                                              |   |           |        |   |              |   |   |   |
|                                                                                                 |   |           |        |   |              |   |   |   |

----

| MAN-AHL      DIVERSIFIED TRADING COMPANY L.P.                            |   |               |       |   |               |   |
|--------------------------------------------------------------------------|--------|--------------------|------------|--------|--------------------|--------|
| (A      Delaware Limited Partnership)                                    |   |               |       |   |               |   |
|                                                                     |   |               |       |   |               |   |
| STATEMENTS      OF OPERATIONS (UNAUDITED)                                |
|                                                                     |   |               |       |   |               |   |
|                                                                     |   | For      the three |       |   | For      the three |   |
|                                                                     |   | months      ended  |       |   | months      ended  |   |
|                                                                     |   | March 31, 2008     |       |   | March 31, 2007     |   |
|                                                                     |   |               |       |   |               |   |
| NET      INVESTMENT INCOME:                                              |   |               |       |   |               |   |
|   Interest      income                                         |   | $                  | 2,052,217  |   |               | $      | 2,083,260 |   |
|                                                                     |   |               |       |   |               |   |   |   |
| NET      REALIZED AND UNREALIZED GAINS (LOSSES) ON                       |   |               |       |   |               |   |   |   |
|   TRADING      ACTIVITIES:                                     |   |               |       |   |               |   |   |   |
|   Net      realized trading gains (losses) on closed contracts |   |               | 51,511,237 |   |               |   | (7,330,257 | ) |
|   Net      change in unrealized trading losses on              |   |               |       |   |               |   |   |   |
|     open      contracts                              |   |               | (3,158,064 | )      |               |   | (3,362,351 | ) |
|                                                                     |   |               |       |   |               |   |   |   |
| NET      GAIN (LOSS) ON TRADING ACTIVITIES                               |   |               | 48,353,173 |   |               |   | (10,692,608 | ) |
|                                                                     |   |               |       |   |               |   |   |   |
| NET      INCOME (LOSS)                                                   |   | $                  | 50,405,390 |   |               | $      | (8,609,348 | ) |
|                                                                     |   |               |       |   |               |   |   |   |
|                                                                     |   |               |       |   |               |   |   |   |
| NET      INCOME (LOSS) FOR A UNIT OF                                     |   |               |       |   |               |   |   |   |
|  PARTNERSHIP      INTEREST                                          |   | $                  | 1,358.07   |   |               | $      | (237.91 | ) |
|                                                                     |   |               |       |   |               |   |   |   |
| See      notes to financial statements.                                  |   |               |       |   |               |   |   |   |

----

| MAN-AHL      DIVERSIFIED TRADING COMPANY L.P.                            |   |     |        |   |    |   |   |
|--------------------------------------------------------------------------|--------|----------|-------------|--------|---------|--------|--------|
| (A      Delaware Limited Partnership)                                    |   |     |        |   |    |   |   |   |   |
|                                                                     |   |     |        |   |    |   |   |   |   |
| STATEMENTS      OF CHANGES IN PARTNERS’ CAPITAL (UNAUDITED)        |   |     |        |   |    |   |   |   |   |
| FOR      THE THREE MONTHS ENDED MARCH 31, 2008 AND 2007                  |
|                                                                     |   |     |        |   |    |   |   |   |   |
|                                                                     |   |     |        |   |    |   |   |   |   |
|                                                                     |   | Limited  |        |   | General |   |   |   |   |
|                                                                     |   | Partners |        |   | Partner |   |   | Total |   |
|                                                                     |   |     |        |   |    |   |   |   |   |
| PARTNERS’      CAPITAL — December 31, 2006                   |   | $        | 203,710,443 |   |    | $      | -      |   |   | $ | 203,710,443 |   |
|                                                                     |   |     |        |   |    |   |   |   |   |   |   |   |
|   Issuance      of 2,755 units of limited                      |   |     |        |   |    |   |   |   |   |   |   |   |
|     partnership      interest                        |   |     | 16,437,950  |   |    |   | -      |   |   |   | 16,437,950 |   |
|   Redemption      of 1,934 units of limited                    |   |     |        |   |    |   |   |   |   |   |   |   |
|     partnership      interest                        |   |     | (11,296,594 | )      |    |   | -      |   |   |   | (11,296,594 | ) |
|   Net      loss                                                |   |     | (8,609,348  | )      |    |   | -      |   |   |   | (8,609,348 | ) |
|                                                                     |   |     |        |   |    |   |   |   |   |   |   |   |
| PARTNERS’      CAPITAL — March 31, 2007                      |   | $        | 200,242,451 |   |    | $      | -      |   |   | $ | 200,242,451 |   |
|                                                                     |   |     |        |   |    |   |   |   |   |   |   |   |
| PARTNERS’      CAPITAL — December 31, 2007                   |   | $        | 260,209,821 |   |    |   | -      |   |   | $ | 260,209,821 |   |
|                                                                     |   |     |        |   |    |   |   |   |   |   |   |   |
|   Issuance      of 5,248 units of limited partnership interest |   |     | 42,327,581  |   |    |   | -      |   |   |   | 42,327,581 |   |
|   Redemption      of 2,695 units of limited                    |   |     |        |   |    |   |   |   |   |   |   |   |
|     partnership      interest                        |   |     | (22,594,426 | )      |    |   | -      |   |   |   | (22,594,426 | ) |
|   Net      income                                              |   |     | 50,405,390  |   |    |   | -      |   |   |   | 50,405,390 |   |
|                                                                     |   |     |        |   |    |   |   |   |   |   |   |   |
| PARTNERS’      CAPITAL — March 31, 2008                      |   | $        | 330,348,366 |   |    | $      | -      |   |   | $ | 330,348,366 |   |
|                                                                     |   |     |        |   |    |   |   |   |   |   |   |   |
|                                                                     |   |     |        |   |    |   |   |   |   |   |   |   |
| See      notes to financial statements.                                  |   |     |        |   |    |   |   |   |   |   |   |   |

----

| MAN-AHL      DIVERSIFIED TRADING COMPANY L.P.                                                                              |   |               |        |   |               |   |
|----------------------------------------------------------------------------------------------------------------------------|--------|--------------------|-------------|--------|--------------------|--------|
| (A      Delaware Limited Partnership)                                                                                      |   |               |        |   |               |   |
|                                                                                                                       |   |               |        |   |               |   |
| STATEMENTS      OF CASH FLOWS (UNAUDITED)                                                                                  |
|                                                                                                                       |   |               |        |   |               |   |
|                                                                                                                       |   | For      the three |        |   | For      the three |   |
|                                                                                                                       |   | months      ended  |        |   | months      ended  |   |
|                                                                                                                       |   | March 31, 2008     |        |   | March 31, 2007     |   |
|                                                                                                                       |   |               |        |   |               |   |
| CASH      FLOWS FROM OPERATING ACTIVITIES:                                                                                 |   |               |        |   |               |   |
|   Net      income (loss)                                                                                         |   | $                  | 50,405,390  |   |               | $      | (8,609,348 | ) |
|   Adjustments      to reconcile net income (loss) to net cash                                                    |   |               |        |   |               |   |   |   |
|     provided      by (used in) operating activities:                                                   |   |               |        |   |               |   |   |   |
|     Net      change in unrealized trading losses on open contracts                                     |   |               | 3,158,064   |   |               |   | 3,362,351 |   |
|     Changes      in assets and liabilities:                                                            |   |               |        |   |               |   |   |   |
|     Due      from broker                                                                               |   |               | 72,343,582  |   |               |   | 2,620,472 |   |
|     Interest      receivable                                                                           |   |               | 1,626       |   |               |   | (18,934 | ) |
|                                                                                                                       |   |               |        |   |               |   |   |   |
|            Net      cash provided by (used in) operating activities |   |               | 125,908,662 |   |               |   | (2,645,459 | ) |
|                                                                                                                       |   |               |        |   |               |   |   |   |
| CASH      FLOWS FROM FINANCING ACTIVITIES:                                                                                 |   |               |        |   |               |   |   |   |
|   Proceeds      from subscriptions                                                                               |   |               | 42,327,581  |   |               |   | 16,437,950 |   |
|   Payments      on redemptions                                                                                   |   |               | (18,147,956 | )      |               |   | (11,815,274 | ) |
|                                                                                                                       |   |               |        |   |               |   |   |   |
|            Net      cash provided by financing activities           |   |               | 24,179,625  |   |               |   | 4,622,676 |   |
|                                                                                                                       |   |               |        |   |               |   |   |   |
| NET      INCREASE IN CASH AND CASH EQUIVALENTS                                                                             |   |               | 150,088,287 |   |               |   | 1,977,217 |   |
|                                                                                                                       |   |               |        |   |               |   |   |   |
| CASH      AND CASH EQUIVALENTS — Beginning of period                                                                 |   |               | 158,733,582 |   |               |   | 150,918,465 |   |
|                                                                                                                       |   |               |        |   |               |   |   |   |
| CASH      AND CASH EQUIVALENTS — End of period                                                                       |   | $                  | 308,821,869 |   |               | $      | 152,895,682 |   |
|                                                                                                                       |   |               |        |   |               |   |   |   |
|                                                                                                                       |   |               |        |   |               |   |   |   |
| See      notes to financial statements.                                                                                    |   |               |        |   |               |   |   |   |
|                                                                                                                       |   |               |        |   |               |   |   |   |

----

| 1.   | ORGANIZATION      OF THE PARTNERSHIP |
|----------------|--------------------------------------|

| 2.   | SIGNIFICANT      ACCOUNTING POLICIES |
|----------------|--------------------------------------|

----

| 3.   | ADVISORY      AGREEMENT AND PARTNERSHIP AGREEMENT |
|----------------|---------------------------------------------------|

----

| 4.   | DERIVATIVE      FINANCIAL INSTRUMENTS |
|----------------|---------------------------------------|

| 5.   | FINANCIAL      GUARANTEES |
|----------------|---------------------------|

| 6.   | RECENT      ACCOUNTING PRONOUNCEMENTS |
|----------------|---------------------------------------|

----

|                                                                                          | Fair      Value Measurements |
|-----------------------------------------------------------------------------------------------|------------------------------|
|                                                                                          |                         |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                          |                         |   |   |   | Quoted      Prices in |   |   | Significant      Other |   |   | Significant      Other |   |
|                                                                                          |                         |   |   |   | Active      Markets for |   |   | Observable |   |   | Unobservable |   |
|                                                                                          |                         | Value      as of |   |   | Identical      Assets |   |   | Inputs |   |   | Inputs |   |
| Description                                                                                   |                         | March      31, 2008 |   |   | (Level      1) |   |   | (Level      2) |   |   | (Level      3) |   |
|                                                                                          |                         |   |   |   |   |   |   |   |   |   |   |   |
| Net      unrealized trading gains on open futures contracts                                   |                         | $ | 3,426,380 |   |   | $ | 3,426,380 |   |   | $ | - |   |   | $ | - |   |
|                                                                                          |                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Net      unrealized trading gains on open forward contracts                                   |                         |   | 1,075,353 |   |   |   | - |   |   |   | 1,075,353 |   |   |   | - |   |
|                                                                                          |                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total                                                                                         |                         | $ | 4,501,733 |   |   | $ | 3,426,380 |   |   | $ | 1,075,353 |   |   | $ | - |   |
|                                                                                          |                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                          |                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Valuation      of above positions are discussed in Note 2 of these financial      statements. |                         |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                                          |                         |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

| 7.   | SUBSEQUENT      EVENT |
|----------------|-----------------------|

----

| ITEM      2. | Management's      Discussion and Analysis of Financial Condition and Results of      Operations |
|--------------|-------------------------------------------------------------------------------------------------|

----

----

----

----

| Date of Redemption:                                                                                                         | Amount Redeemed:                                               |
|-----------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------|
| January      31, 2008                            | $387,595                                                       |
| February      29, 2008                           |           $0 |
|         March 31, 2008                 | $601,225                                                       |
| TOTAL                                                                                                                       | $988,820                                                       |

----

| Designation |     Description                                             |
|-------------|---------------------------------------------------------------------------------|
|        |                                                                            |
| 31.1        | Rule      13a-14(a)/15d-14(a) Certification of Principal Executive      Officer |
|        |                                                                            |
| 31.2        | Rule      13a-14(a)/15d-14(a) Certification of Principal Financial      Officer |
|        |                                                                            |
| 32.1        | Section      1350 Certification of Principal Executive Officer                  |
|        |                                                                            |
| 32.2        | Section      1350 Certification of Principal Financial  Officer                 |

| 3.1 | Certificate      of Limited Partnership of Man-AHL Diversified I  L.P. |
|-----|------------------------------------------------------------------------|

| 4.1 | Third      Amended Limited Partnership Agreement of Man-AHL Diversified I      L.P. |
|-----|-------------------------------------------------------------------------------------|

| 10.1 | Form      of Customer Agreement between E D & F Man International Inc. and      Man-AHL Diversified Trading CompanyL.P. |
|------|-----------------------------------------------------------------------------------------------------------------------------|

| 10.2 | Form      of Trading Advisor Agreement between Man-AHL Diversified I L.P., Man      Investments (USA) Corp. and Man-AHL (USA)  Limited. |
|------|-----------------------------------------------------------------------------------------------------------------------------------------|

| 10.3 | Form      of Selling Agreement between Man Investments (USA) Corp. and Man      Investments Inc. |
|------|--------------------------------------------------------------------------------------------------|

----

|   | Man-AHL      Diversified I L.P.(Registrant)              |                                           |
|--------|----------------------------------------------------------|------------------------------------------------|
|   |                                                     |                                           |
|   | By:      Man Investments (USA) Corp.General      Partner |                                           |
|   |                                                     |                                           |
|   | By:      /s/ Uwe Eberle                                  |                                           |
|   |                                                     |                                           |
|   |                                                     | President      and Principal Executive Officer |   |
|   |                                                     |                                           |   |
|   | By:      /s/ Alicia B. Derrah                            |                                           |
|   |                                                     |                                           |   |
|   |                                                     | Chief      Financial Officer                   |   |

----

| Exhibit      Number |     Description of      Document                            |
|---------------------|---------------------------------------------------------------------------------|
|                |                                                                            |
| 31.1                | Rule      13a-14(a)/15d-14(a) Certification of Principal Executive      Officer |
|                |                                                                            |
| 31.2                | Rule      13a-14(a)/15d-14(a) Certification of Principal Financial      Officer |
|                |                                                                            |
| 32.1                | Section      1350 Certification of Principal Executive Officer                  |
|                |                                                                            |
| 32.2                | Section      1350 Certification of Principal Financial  Officer                 |

----